Question

我正在尝试创建一个具有水平标题部分的Array ( [2] => Array ( [id] => 14 [title] => SPORTS ) [0] => Array ( [id] => 8 [title] => MUSIC ) [1] => Array ( [id] => 17 [title] => Indie ) [3] => Array ( [id] => 14 [title] => SPORTS ) )标题，但问题是正在创建的部分是垂直的，我希望所有内容都是动态的。

为此我正在使用CollectionView： -

viewForSupplementaryElementOfKind

Answer 1

请你试试下面的代码（使用DateFlowLayout）

bool isPortrait = UIInterfaceOrientationIsPortrait（orientation）;

self.collectionView.frame = isPortrait ? CGRectMake(0, 0, 768, 180) : CGRectMake(0, 60, 246, 595);
self.collectionView.collectionViewLayout = isPortrait ? DateFlowLayout.new : UICollectionViewFlowLayout.new;
self.flowLayout = ((UICollectionViewFlowLayout *)self.collectionView.collectionViewLayout);

self.flowLayout.scrollDirection = isPortrait ? UICollectionViewScrollDirectionHorizontal : UICollectionViewScrollDirectionVertical;
self.flowLayout.headerReferenceSize = isPortrait ? CGSizeMake(5, 30) : CGSizeMake(246, 40); //width is margin to the left of the header - must be bigger than 0 to show headers correct.
self.flowLayout.minimumInteritemSpacing = isPortrait ? 10 : 0;
self.flowLayout.minimumLineSpacing = isPortrait ? 17 : 7;
self.flowLayout.sectionInset = isPortrait ? UIEdgeInsetsMake(27, 30, 25, 0) : UIEdgeInsetsMake(0, 14, 0, 0);
//self.flowLayout.itemSize = CGSizeMake(58, 85); //You might need this
self.collectionView.alwaysBounceVertical = isPortrait ? NO : YES;

Answer 2

这很好（这里我们根据图在collection view header创建标签和按钮）： -

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
    UICollectionReusableView *reusableView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView" forIndexPath:indexPath];

    CGFloat x=0,y=0;

    for (int i = 0;i<[_officelist count];i++)
    {
        id val=[officeSize objectAtIndex:i];
        CGFloat val1=[val floatValue];
            UILabel *newLabel = [[UILabel alloc] initWithFrame:CGRectMake(x, 10,val1-1,35)];

            newLabel.text=[NSString stringWithFormat:@"%@",_officelist[i]];

            newLabel.textAlignment = NSTextAlignmentCenter;

            newLabel.backgroundColor = [UIColor greenColor];
            [self.roadmapCollectionView addSubview:newLabel];

        x=x+val1+1;
    }
    for (int i=0; i<_departmentlist.count; i++) {

        dept=[_departmentlist objectAtIndex:i];
        id val=[officeSize objectAtIndex:i];
        CGFloat val1=[val floatValue];

        float val2=val1/[dept count];
            //NSLog(@"DEPT SIZE - %f",val2);

            for (int j = 0; j < [dept count]; j++)
            {
                UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
                button.frame = CGRectMake(y, 50,val2-1, 25);
                [button setBackgroundColor:[UIColor yellowColor]];
                [button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
                [button setTitle:[NSString stringWithFormat:@"%@",dept[j]] forState:UIControlStateNormal];

                [self.roadmapCollectionView addSubview:button];

                [deptSize addObject:[NSNumber numberWithFloat:y]];

                y=y+val2+1;

            }
}

    return reusableView;
}

集合查看多个水平节标题

2 个答案: